<![CDATA[Characterization of material on cockle shell has been wiped out the shells hills of the Bendahara district of Aceh Tamiang district, with the aim of knowing the basic content and diffraction patterns of the cockle shell to plain CaCO3 aragonite. The research method begins with sampling the cockle shell from the Kerang hill. Firstly, preparation cockle shell. Then, characterized by X-Ray Fluorescence (XRF) examining to work out the basic content within the cockle shell, then doing Scanning Microscopy Energy Dispersive X-Ray (SEM-EDX), and X-ray diffraction ( XRD) testing. The characterization leads to XRF testing showed that the content of the constituent elements of the CaCO3 compound was dominated by CaO of 98.93% at station I and at station II, CaO was obtained the maximum amount as 98.73%. In SEM analysis, the cockle shell have a rod-like morphological structure within the sort of aragonite crystals. The results of EDX at station I, obtained CaO elements is 58.18% and at station II CaO is 36.76%. The results of XRD analysis, the cockle shell have an aragonite phase with an orthorombic crystal structure. the very best phase that appears at 2θ at station I is 26,220, and station II is 26,280.]]>
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